High-voltage generation



April 20, 1954 W. J. OESTREICHER HIGH-VOLTAGE GENERATION Filed May 16, 1951 I I 3 IN ENTOR. NARRE/Yd-OfJT/Yf/C/vfk BY T 75mm fl w ATTORNEY Patented Apr. 20, 1954 2,67 6,273 HIGH-VOLTAGE GEN ERATIQN Warren J. Oestreicher, Brooklyn, N. Y., assignor to Tele King Corporation, a corporation of New York Application May 16, 1951, Serial No. 226,626

This invention relates to an electromechanical voltage generator and more specifically to a compact and portable unit permitting production of relatively high A. C. and D. C. voltagefrom a low voltage source such as a battery.

One of the objects of the invention is a beating or buzzing mechanism operating against piezoelectrical material.

Another object of the invention is the combination of several of such beating mechanisms operating on a number of piezoelectric crystals, both beating mechanisms and crystal systems being interconnected mechanically and electrically respectively to obtain waves of predetermined amplitude and frequency ranges.

These and other objects of the invention will be more fully apparent from the drawing annexed herewith in which Fig. 1 represents a rather simple form of realizing the invention.

Figs. 2 and 3 are modifications of Fi 1.

Fig. 4 represents a more elaborate example of realizing the invention.

Figs. 5 and 6 show modifications of Fig. 4.

In Fig. 1, part I represents a beating or buzzing mechanism such as is used in a well known bell or ringer arrangement and supplied from a low voltage source such as a battery as schematically indicated in Fig. l at 2. The ringer or buzzer lever or hammer is schematically indicated as projecting at 3 and is shown to beat against one of the surfaces of a piezoelectric crystal 4, the electrodes of which are schematically indicated at 5, 6 respectively. Electrodes 5, 6 are connected in circuit with a diode rectifier I having an output circuit schematically indicated by impedance or resistor 8.

In this way depending upon the build up of voltage in circuit 4 through 8 a relatively high D. C. voltage will be generated from a relatively low voltage from battery 2 with a minimum of circuit elements and connections.

Such D. C. voltage may be used to operate portable receivers for radio or television receivers or also serve in the operation of other portable electric equipment such as airborne radio devices where a minimum of weight and maximum power supply are required.

The invention is, of course, not limited to the arrangement, mechanical and electrical shown and described.

Battery 2 may be replaced by any other source of D. C. or A. C.

9 Claims. (01.307-450) Buzzer mechanism 3 and its manner of operation on crystal 4 may also be varied without exceeding the scope of the invention.

More specifically the vibrations afiecting crystal 4 may be applied thereto not only directly but also indirectly, i. e. over a liquid or solid coupling.

Figs. 2 and 3 show a crystal 9 enclosed or suspended in an oil filled vessel It]. The potential producing vibrations may be applied in one or another direction such as is shown in Figs. 2 and 3 at H, 12, respectively to produce in the circuit including diode l3, condenser I4 and resistor IS,

a potential of desired intensity and polarity.

The vibrations afiecting the liquid in vessel 10 and therethrough crystal H, may also be caused to operate effectively, by attaching the crystal and also if necessary, its associated apparatus to a vibrating mechanism such as an airplane or a ship. In this way the otherwise useless but continuous vibrations of a continuously moving mechanism are exploited in a very eflicient manner to generate a predetermined high D. C. and A. C. voltage. In this way-especially in air borne equipment-battery or power requirement may be reduced to a minimum.

In Fig. 3 there are several crystals connected in series such as shown for example at l6, l1 intercoupled for example by a condenser such as shown at [8. Each crystal I6, I! is operated upon by a separate beat or buzzer mechanism such as schematically shown at I9, 20 wherein each of the buzzer mechanisms is also shown to be fed from a separate battery or other supply source schematically indicated at 2|, 22 respectively.

It is apparent if necessary that only a single common battery may be used to operate the different buzzers and that only one buzzer may be used coupled if necessary to a number of separate hammers to beat on the different crystal devices connected in the voltage generating circult.

It is also possible without exceeding the scope of the invention to arrange all crystals not only in electrical contact but also in physical contact with each other, for example in the form of a crystal stack such as schematically indicated in Fig. 5. The stack consists of a number of crystal elements 23 to 28, one of which is beaten or excited to vibration by a buzzer shown at 29; in this way end crystal 28 will transfer by physical contact the received vibrations to the other crystals of the stack which if properly interconnected in an appropriate circuit will cause the generation of a predetermined high A. C. or D. C. potential.

Fig. 6 shows the arrangement of a number of crystals in an oil filled vessel schematically indicated at 30. Vessel 30 is operated upon by a suitable vibration generator 31. In this way the operating vibrations are caused through the oil or another liquid, to be distributed substantially uniformly over the individual crystals, thus contributing to enhance efliciency of voltage generation.

In the cir'ciiit swig-i1 "in addition tothe known electric"pi'e fe'rably adjustable delay "device IB coupling certain individual crystals to obtain maximum intensity and/or optimum wave form, there may also be arranged a mechanical coupling between the difierent buzzer mechanism or different hammers such as schematically indicated by dotted line 32 in Fig. 4. Into'coupling line 32, there may be inserted mechanical delay devices or filters such as springs 'and masses otherwise well known in the art and schematical- 1y indicated by a block 33. The filter or filters may also be adjusted or-adjustable to obtain a predetermined oroptimummespdnsive characteristic incir'cuit' 3'4, 35, 36.

-The invention is not limited to the particular crystals and crystal arrangements, mechanical devices and cle'c'troncircu'its shown'an'd "described but'inayb'efapplied to'any type of crystal be'aa mg mechanism andcirciiit without exceeding its scope.

1 main:

1. scent- 6f high ltag'e supply comprising 5 crystal me ns for translating mechanical vibration into electrical'vibfatio'n, means fo'r beating against said crystal, and an electrical circuit ically'intercoupled.

5. Source according to claim 4, comprising electric eras "delaying means coupled between said differnt'crystal means.

6. Source acc'dt'ding to claim 4, comprising mechanicalpliasedelay means coupled between said different beating means.

7. Source according to claim 1, comprising electrical means in cii cuit with said crystal means.

8. Source awarding to claim =1, "com rising mechanical filter means coupled "between said different beating means.

9. Source ordi-iig to claim 1, comprising a "stack of ys't'als mechanical-1y intercou'pled and means 'for beating against at least one "of the crystals of said stack.

Re ferencesbite'd in tli file bf this patent UNITED STATESPATENTS Number Name 2,152,184 Gri'scfihl '23 1939 

